01:830:331 Lecture Notes - Lecture 3: Axoplasmic Transport, Golgi Apparatus, Lipid Bilayer
24 Jul 2016
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Document Summary
~outside membrane is lipid bilayer with embedded proteins. ~nucleus has chromosomes which have dna which gets transcribed into mrna which makes proteins. ~number of genes does not always correlate to organism complexity. ~only about 1. 5% of genome codes for protein product. ~noncoding dna may be more important than we think. ~mitochondria are involved in a lot of extracting energy from nutrients, making atp. Rough has ribosomes that make proteins to send out of the cell. Smooth channels for separating molecules in reactions, producing lipids. ~golgi apparatus is a specialized smooth er, assembles molecules, packages stuff into membranes. ~lysosomes are made in golgi, used to destroy unneeded substances. ~cytoskeleton is protein matrix that gives shape to cell, has a lot of microtubules. ~axoplasmic transport system is for transporting substances between terminal buttons and soma. Anterograde motion is from soma to terminal buttons, carried by kinesin. Retrograde motion is from terminal buttons to soma, carried by dynein.
